<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt />
        <span>CoCo视频网站</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
         <!-- 侧边栏菜单区域 -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409EFF"
          :unique-opened="true"
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
          <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.childrenIds" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
            <i class="el-icon-menu"></i>
            <span slot="title">{{subItem.authName}}</span>
          </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容主体 -->
      <el-main>
        <!--路由占位符-->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      //左侧菜单数据
      menulist: [],
      iconsObj: {
        '1': "iconfont icon-users",
        '2': "iconfont icon-danju",
        '3': "iconfont icon-baobiao",
        '4': "iconfont icon-lock_fill",
      },
      isCollapse: false,
      //被激活的链接地址
      activePath: ''
    }
  },
  //网站一打开就运行
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    //退出
    async logout() {
      this.setLoadStatus("logOut")
      window.sessionStorage.clear();
      this.$router.push("/login"); 
    },
    //设置登录状态
    async setLoadStatus(userId){
      await this.$http.put(`user/updateStatus/${userId}/${'0'}`).then(resp=>{
        if(resp.status !== 200) return this.$message.error("更新失败！")
      })
    },
    //获取导航栏数据
    async getMenuList() {
      await this.$http.get('menus')
      .then(resp=>{
          if (resp.status !==200) return this.$message.error("获取数据失败！")
          this.menulist = resp.data    
          })
      .catch(() => {
        this.$message.error("保存失败！");
      });
    },
    //实现菜单折叠和展开功能
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    //保存链接的激活状态
    saveNavState(activePath){
      window.sessionStorage.setItem("activePath",activePath)
      this.activePath = activePath
    }
  }
};
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0%;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}
.el-main {
  background-color: #eaedf1;
}
.iconfont {
  margin-right: 10px;
}
.toggle-button{
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>